Mingdan Wang , Pengzuo Chen , Huigang Wang , Yanying Zhao
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引用次数: 0
Abstract
The electrochemical biomass valorization of industrial by-products or pollutants using renewable electricity offers significant promise for carbon neutrality. However, the huge challenges still exist in the development of efficient bifunctional electrocatalysts. Herein, we put forward a high-efficiency co-electrolysis system by coupling the nitrite reduction reaction (NO2RR) and the glycerol oxidation reaction (GOR) over a novel heterogeneous β-Co(OH)2/Cu2(OH)3Cl catalyst. The β-Co(OH)2/Cu2(OH)3Cl shows excellent bifunctional performance with high Faradaic efficiencies of formate (90.1%) and NH3 (91.9%) at cell voltage of 1.5 V, high yield rate of formate (89.6 mg h−1 cm−2) and NH3 (36.07 mg h−1 cm−2) at cell voltage of 1.9 V, and superior stability in an anion exchange membrane co-electrolyzer. The in-situ Raman result confirms the unique Co/Cu-based bimetallic synergistic sites of β-Co(OH)2/Cu2(OH)3Cl towards superior GOR performance, while the operando Fourier transform infrared spectroscopy demonstrates the improved protonation kinetics of key intermediates and optimized water dissociation ability of β-Co(OH)2/Cu2(OH)3Cl for high NO2RR activity. Our work illuminates alternative avenues to exploit the innovative and energy-saving technology for the co-production of high-added chemicals.
期刊介绍:
The Journal of Energy Chemistry, the official publication of Science Press and the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, serves as a platform for reporting creative research and innovative applications in energy chemistry. It mainly reports on creative researches and innovative applications of chemical conversions of fossil energy, carbon dioxide, electrochemical energy and hydrogen energy, as well as the conversions of biomass and solar energy related with chemical issues to promote academic exchanges in the field of energy chemistry and to accelerate the exploration, research and development of energy science and technologies.
This journal focuses on original research papers covering various topics within energy chemistry worldwide, including:
Optimized utilization of fossil energy
Hydrogen energy
Conversion and storage of electrochemical energy
Capture, storage, and chemical conversion of carbon dioxide
Materials and nanotechnologies for energy conversion and storage
Chemistry in biomass conversion
Chemistry in the utilization of solar energy